Tally Dascom 7010, Maintenance Manual

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3-5. Disassembly, Reassembly and Lubrication
3-9
3-5-1. Unit, Head
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Carefully handle the Unit, Head when disassembling and reassembling so as not to
damage the thermal elements of the Unit, Head. Especially, avoid contacting the
thermal elements with the metal part, etc.
The Unit, Head can be removed easily without detaching any other parts.
1. Open the top cover.
2. Open the head block by pushing the head open lever.
3. While holding the Unit, Head, turn the screw until the Unit, Head comes off.
4. Remove the SA, Head Cable from the Unit, Head.
Notes on reassembling:
• When attaching the Unit, Head, do not strongly push it against the head block. The Head Earth
Plate may come off if you push the Unit, Head strongly.
• Securely fasten the Unit, Head with the screw.
• When you replace the Unit, Head with a new one, adjust the angle of head spacer shaft, if ribbon
wrinkles are not removed. (This adjustment will be required only when satisfactory results are
not obtained by adjusting the ribbon tension with the adjusting screws of the Unit, Ribbon Frame
L.)
Refer to “
3-6-3. Ribbon Skew Adjustment ”.
Caution
Unit, Head
(Head Open Lever)
SA, Head Cable
Screw
(Head Block)
Head Earth Plate